The synergic effect of poly(ethylene glycol) together with chloride ion for inhibiting copper deposition in electroplating has been particular interest some time. In this study, the potential-dependent behavior glycol), or without a bath is investigated using surface-enhanced Raman spectroscopy technique. presence proves to play significant role enhancing PEG adsorption Cu electrode surface. More importantly, spectroscopic evidence strongly suggests formation PEG−Cu−Cl complex. By comparing...

Chiral nematic liquid crystals are known to form blue phases-liquid states of matter that exhibit ordered cubic arrangements topological defects. Blue-phase specimens, however, generally polycrystalline, consisting randomly oriented domains limit their performance in applications. A strategy relies on nano-patterned substrates is presented here for preparation stable, macroscopic single-crystal blue-phase materials. Different template designs conceived exert control over different planes the...

Endothelial senescence is an important risk factor leading to atherosclerosis. The mechanism of quercetin against endothelial worth exploring.Quercetin (20 mg/kg/d) was administered ApoE-/- mice intragastrically evaluate the effectiveness on atherosclerotic lesion in vivo. In vitro, human aortic cells (HAECs) were used assess effect cellular induced by oxidized low-density lipoprotein (ox-LDL). Transcriptome microarray and quantitative RT-PCR conducted study pharmacological targets...

The single-phase quasi-Z source inverter (qZSI) topology has recently attracted attention for grid-tie photovoltaic (PV) applications. However, due to the inherent second-harmonic power flow in systems, a large qZS network is required reduce component of currents and voltages on dc side. Minimization remains an open issue. This paper proposes technique that minimizes capacitance inductance qZSI by employing dc-side low-frequency current ripple damping control. Through analysis flow, model...

Optical metasurfaces—planar nanostructured devices that can arbitrarily tailor the wavefront of light—may be reconfigured by changing their dielectric environment. The application external stimuli to liquid crystals is a particularly promising means tuning optical properties embedded metasurfaces because crystals' large and broadband anisotropy. However, detailed behavior immediately adjacent meta-atoms elements often overlooked, despite optics device depending sensitively on this (e.g.,...

Abstract Swimmers at liquid/air interfaces have drawn enormous attention because of their potential applications. Described herein is one novel light‐driven swimmer based on a bimorph composite structure photoresponsive liquid‐crystalline polymer network and commercially available polyimide (Kapton). The motion the can be controlled by photoirradiation. bilayer‐structured film shows quickly photoinduced bending towards Kapton side upon exposure to UV light, recovers immediately after removal...

Herein, improving the conductivity of lubricant itself is main idea behind current‐conductive designs. However, as per previous studies, interface state has a more dominant influence on than lubricant. Therefore, direct and effective way to improve conductivity. In this study, primary underlying design conductive Multilayer graphene/ionic liquid (MG/IL) composites with excellent interfacial adsorption properties are prepared using IL non‐covalently modified graphene. Subsequently,...

Polymer‐stabilized blue phase liquid crystal (PS‐BPLC) is emerging as a promising candidate for next‐generation photonic applications due to its attractive features: nano‐scale structure that enables sub‐millisecond response time, self‐assembly eliminates the need surface alignment, and three‐dimensional cubic so it quasi‐isotropic without applied field. Here, we will look into properties of PS‐BPLC microscopically macroscopically, focus on non‐display based these properties. First give...

Liquid-crystal blue phases (BPs) are highly ordered at two levels. Molecules exhibit orientational order nanometer length scales, while chirality leads to arrays of double-twisted cylinders over micrometer scales. Past studies polycrystalline BPs were challenged by the existence grain boundaries between randomly oriented crystalline nanodomains. Here, nucleation is controlled with precision relying on chemically nanopatterned surfaces, leading macroscopic single-crystal BP specimens where...

Two new three-dimensional (3D) LnIII metal-organic frameworks (MOFs) were designed and successfully obtained via a solvothermal reaction between lanthanide(III) nitrates semi-flexible carbazole tetracarboxylate acid linker as high-performance chromophore. 1 2 possess porous 3D networks with channels along the axis, more importantly, they show highly sensitive selective fluorescence quenching response to Fe3+ CrVI anions. The sensing mechanism investigation revealed that weak interactions of...

Abstract The blue phase of liquid crystals (BPLCs) with a cubic lattice disclination lines and 3D nanostructure enables the modulation photonic bandgap thus casting them in category crystals. Its unique nature promises applications display technologies, electro‐optics, sensors. To integrate these ordered materials into wearable devices fundamental understanding curvature, spatial confinement is necessary. Although continuous flat geometries have been studied, confining curvature has shown to...

Copolymers of 2‐(methacrylamido)glucopyranose (MAG) and methacrylic acid (MAA) are synthesized by RAFT polymerization then used as templates to prepare glycopolymer‐functionalized Ag nanoclusters (Gly‐Ag NCs) through microwave irradiation. Polymers the resulting characterized NMR, GPC, UV‐Vis, SEM, TEM, AAS fluorescence spectroscopy. The bio‐activity fluorescent Gly‐Ag NCs further examined using GLUT‐1 over‐expressing cancer cells K562. show efficient binding ability toward K562 inhibit cell...

Mechanical strain, curvature, and elasticity lead to the emergence of exotic molecular configurations in chiral liquid crystals.

Today's commodity camera systems rely on compound optics to map light originating from the scene positions sensor where it gets recorded as an image. To record images without optical aberrations, i.e., deviations Gauss' linear model of optics, typical lens introduce increasingly complex stacks elements which are responsible for height existing cameras. In this work, we investigate flat nanophotonic computational cameras alternative that employs array skewed lenslets and a learned...

The factors that influence the broadband antireflection of block copolymer/homopolymer blend films were systematically investigated. gradient refractive index structure, which was generated by removing PMMA content from a film PS-b-PMMA/PMMA blends, contributed to antireflection. volume fraction (fPMMA), total degree polymerization (N) and weight percent homopolymer played key role in formation porosity inner structure. By increasing χN, PS porous structure kept collapsing after removal...

The emerging 650 V large current rating, Enhancement-mode (E-mode) Gallium Nitride High-Electron-Mobility Transistor (GaN HEMT) is a promising device for low to medium power, high power density converters (e.g., motor drives, battery chargers), which require robustness levels. Thus, comprehensive study of the short circuit behavior E-mode GaN HEMT subject this paper. begins with an introduction test platform and method. Subsequently, single pulse, 10 μs tests are performed extract HEMT, from...

Liquid crystal blue phases (BPs) are three-dimensional soft crystals with unit cell sizes orders of magnitude larger than those classic, atomic crystals. The directed self-assembly BPs on chemically patterned surfaces uniquely enables detailed in situ resonant x-ray scattering measurements martensitic phase transformations these systems. formation twin lamellae is explicitly identified during the BPII-to-BPI transformation, further corroborating nature this transformation and broadening...

Chemically patterned surfaces can be used to selectively stabilize blue phases as macroscopic single crystals with a prescribed lattice orientation. By tailoring the interfacial free energy through pattern characteristics, it is possible set, nanoscale precision, optimal conditions induce spontaneously blue-phase crystal nucleation on substrate where uniform, defect-free, finally formed in matter of seconds. The chemical patterns taken into consideration this work are made up alternated...